The Met Gala is like prom night for the fashion industry. It's the annual event where our favorite stars put on their most impressive outfits to strike a pose on the grand steps of the Metropolitan Museum of Art. Once they've made their grand entrance on the most exclusive red carpet of the year, they head inside for the celebration that raises money for the Costume Institute.

Each year has a different theme and hosts. This year's exhibit is called "Manus x Machina: Fashion in an Age of Technology." The hosts include Anna Wintour, Taylor Swift, Idris Elba, and Apple's chief design officer Johnathan Ive. With technology as the focus, the fashions are guaranteed to include some futuristic designs.

Besides picking out the best outfit, an event of this magnitude requires a full day of preparation. The stars are not waiting until the last moment to slip into their looks. They're taking their time to make sure every detail is on point. If you're wondering what exactly it takes to prepare for such an event, read on to see their behind-the-scene moments.